RF measurements

The nRF52 DK is equipped with a small size coaxial
connector (J1) for conducted measurements of the RF signal.

The connector is of SWF type (Murata part no. MM8130–2600) with an internal switch. By default,
when there is no cable attached, the RF signal is routed to the onboard PCB trace antenna.

A test probe is available (Murata part no. MXHS83QE3000) with a standard SMA connection on the
other end for connecting instruments (the test probe is not included with the kit). When
connecting the test probe, the internal switch in the SWF connector will disconnect the PCB
antenna and connect the RF signal from the nRF52832 device to the
test probe.

Figure 1. Connecting a spectrum analyzer

The connector and test probe will add loss to the RF signal which should be taken into account
when doing measurements, see the following table.